Emplacement of the ophiolitic mélanges in the west Karamay area: Implications for the Late Paleozoic tectonic evolution of West Junggar, northwestern China

Zhang, Pan; Wang, Guocan; Polat, Ali; Zhu, Chengyu; Shen, Tianyi; Chen, Yue; Chen, Chao; Guo, Jianwei; Wu, Guiling; Liu, Youtang

doi:10.1016/j.tecto.2018.08.019

Cited by 36 publications

(38 citation statements)

References 109 publications

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“…The Tian Shan is situated at the southern margin of the Central Asian Orogenic Belt (CAOB) and separates the Tarim basin to the south and the Junggar basin to the north (Charvet, Shu, & Laurent‐Charvet, ; Sengör, Natal’in, & Burtman, ; Xiao, Zhang, Qin, Sun, & Li, ; Zhang et al, ; Figure ). Tectonically, the Chinese Tian Shan is usually divided into the North, Central and South Tian Shan (NTS, CTS, STS) by several regional major faults (Figure ).…”

Section: Geological Settingmentioning

confidence: 99%

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

et al. 2019

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Analysing the provenance changes of synorogenic sediments in the Turpan‐Hami basin by detrital zircon geochronology is an efficient tool to examine the uplift and erosion history of the easternmost Tian Shan. We present detrital zircon U‐Pb analysis from nine samples that were collected within marginal lacustrine Middle‐Late Jurassic and aeolian‐fluvial Early Cretaceous strata in the basin. Middle‐Early Jurassic (159–172 Ma) zircons deriving from the southern Junggar dominated the Middle Jurassic sample from the western Turpan‐Hami basin, whereas Permian‐Carboniferous (270–330 Ma) zircons from the Bogda mountains were dominant in the Late Jurassic to Early Cretaceous samples. Devonian‐Silurian (400–420 Ma) and Triassic (235–259 Ma) zircons from the Jueluotage and Harlik mountains constituted the subordinate age groups in the Late Jurassic and Early Cretaceous samples from the eastern basin respectively. These provenance transitions provide evidence for uplift of the Bogda mountains in the Late Jurassic and the Harlik mountains since the Early Cretaceous.

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Section: Geological Settingmentioning

confidence: 99%

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

et al. 2019

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“…and Ma et al (2020). F 1 is the upright folds in the Carboniferous strata (Zhang et al, 2018). The lines in blue colour in Figure 6a represent the occurrences of the dioritic dyke swarms.…”

Section: Field Validationmentioning

confidence: 99%

“…Moreover, Li et al (2015) proposed that the fault was an imbricate thrust structure during the Late Carboniferous to Middle Permian period and transformed into a sinistral strike-slip fault during the Cenozoic period. According to the geochemical study of the ophiolitic rocks by Zhang et al (2018), the dextral strike-slip deformation of the Darbut Fault occurred in 315-308 Ma, and the sinistral strike-slip shearing took place after 302 Ma. In addition, Fan et al (2014) suggested that the fault was also influenced by the Cenozoic India-Asia collision.…”

Section: Formation Time Of the Strike-slip Darbut Faultmentioning

confidence: 99%

Tectonic‐magmatic framework identified by remote sensing analyses and geochronology in West Junggar, Central Asian Orogenic Belt

Zhang

Hong

et al. 2020

Geological Journal

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The temporal and spatial evolutions of the Darbut Fault deformation patterns were analysed for multiple deformation stages in this study by using a regional geological survey, quantitative remote sensing image analyses, and structural analyses. Remote sensing images indicating that the Karamay granitoid batholith is greenish-grey, the Hongshan granitoid batholith is yellowish-green along the Darbut Fault, and the Miaoergou, Akebasitao, and Hatu granitoid batholiths are round in shape and luminous yellow colour. The remote sensing images of the Darbut Fault, Hongshan granitoid batholith, and data from previous research suggest that the upright folds (F 1 ) in the Carboniferous strata near the Darbut Fault and northeast-southwest (NE-SW) striking sub-vertical dextral shear zones in the mélanges represent the regional dextral strike-slip shear zones. The NE-SW striking transcurrent sinistral strike-slip faults and 'S-shaped' drag folds (F 2 ) overprinted the dextral shear zones. The Hongshan batholith is a complex pluton, which was composed of alkaline feldspar granite, syenite granite, and monzogranite. The LA-ICP-MS U-Pb 311-307 Ma of zircons from the ductilely deformed Hongshan alkaline feldspar granite and monzogranites are formed during the dextral shear zone of the Darbut Fault. The 302 Ma Hongshan alkaline feldspar granite is contemporarily formed during the sinistral strike-slip stage of the Darbut Fault. The Hongshan complex pluton has a prolonged formation age and witnesses the whole process of ocean-land conversion from the capture of island arc-related rocks, granite formed in the post-collision stage, and dyke swarms formed in the intracontinental extension stage.

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“…The central WJT comprises the well‐known Late Palaeozoic Karamay and Darbut ophiolitic mélanges that are exposed roughly along the left‐slip Darbut Fault (Figure b; P. Zhang et al, ). These two ophiolitic mélanges are composed mainly of ~414–385 Ma N‐MORB, E‐MORB, and arc‐like gabbros (e.g., Xu et al, ; Yang, Li, Gu, et al, ; Zhu, Chen, & Qiu, ) and Late Devonian radiolarian‐bearing cherts (Zong, Wang, Jiang, & Gong, ).…”

Section: Geological Backgroundmentioning

confidence: 99%

The Ediacaran to Early Palaeozoic evolution of the Junggar–Balkhash Ocean: A synthesis of the ophiolitic mélanges in the southern West Junggar terrane, NW China

et al. 2019

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The southern West Junggar terrane in the south‐western Central Asian Orogenic Belt (CAOB) is mainly composed of accretionary complexes and characterized by widespread outcrops of ophiolitic mélanges in the Barleik, Mayile, and Tangbale (BMT) areas, representing the site of consumption of the Junggar–Balkhash Ocean. However, due to a lack of comprehensive synthesis of the ophiolitic mélanges, the early evolution of the Junggar–Balkhash Ocean remains poorly understood. This paper first focuses on the little‐known Barleik ophiolitic blocks and associated pillow basalts and then integrates the Barleik, Mayile, and Tangbale ophiolitic mélanges into one model. Mineral and whole‐rock chemistry suggests that the Barleik ophiolitic blocks, including serpentinized dunite, clinopyroxenite, and gabbro, show supra‐subduction zone (SSZ) affinities, as indicated by high Cr# values (76–78) in spinels and strong depletion in Nb, Ta, Zr, and Hf, whereas the Barleik pillow basalts are alkaline and have high TiO2 contents (2.82–3.42 wt.%) and Nb–Ta enrichment, similar to ocean‐island basalt (OIB) lavas. Combined with published chronological and chemical data from ophiolites, metamorphic rocks, and arc plutons, we propose that the BMT Ediacaran to middle Cambrian ophiolitic gabbros were formed in a SSZ environment, implying a single Mariana‐type arc system within the Junggar–Balkhash Ocean, which was coeval with an Andean‐type arc system in the Kyrgyz North Tianshan, supporting an archipelagic model for the south‐western CAOB. By contrast, the BMT OIB‐type basalts are early Silurian in age, much younger than the SSZ‐type ophiolites, and can be interpreted as relicts of seamounts. Thus, a model involving the Ediacaran to Ordovician intra‐oceanic subduction and late Silurian to Early Devonian seamount accretion is helpful for clarifying the different components of the accretionary complexes in the southern West Junggar terrane.

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Emplacement of the ophiolitic mélanges in the west Karamay area: Implications for the Late Paleozoic tectonic evolution of West Junggar, northwestern China

Cited by 36 publications

References 109 publications

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

Tectonic‐magmatic framework identified by remote sensing analyses and geochronology in West Junggar, Central Asian Orogenic Belt

The Ediacaran to Early Palaeozoic evolution of the Junggar–Balkhash Ocean: A synthesis of the ophiolitic mélanges in the southern West Junggar terrane, NW China

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